Refrigerating truck



May 1, 1928. 1,668,238

H. c. FOLGER ET AL REFRIGERATING TRUCK Filed Oct. 51'. 1925 2 Sheets-Sheet 1 m INVENTQRS c. 7'

ATTORNEY.

May 1, 1928.

' H. C. FOLGER ET AL REFRIGERATING TRUCK 2 Sheds-Sheet 2 Filed 001',- 51. 1925 INVENTORS ATTORNEY.

Patented May 1,1928.

UNITED STATES} PATENT OFFICE.

HENRY C. FOLGER, OF WALTHAM, AND JAMES E. OOONNELL, OF BOSTON, MASSACHU- CORPORATION OF DELAWARE.

REERIGEBATING TRUCK.

Application filed October 31, 1925. Serial No. 66,018.

The invention to be hereinafter described ordinary refrigerating machine, but not to a 'temperature sufiiciently low to freeze the liquid. This undergroul'id tank is adapted I to be connected by piping with the body of the truck, in order that. the cooled liquid may be pumped to the body and caused to circulate through compartments receiving closed cartridges,containing a liquid having a low freezing temperature,-but not so low as the freezing temperature of the liquid in the tank. The cooled liquid is also caused to circulate about a hollow wall of are-- aforesaid application, the present applica-' tion being directed to the truck and the cartridges. p

The character of the invention may behest understood by reference to the following de' scription' of one good form thereof shown in theaccompanying drawings, wherein:

Fig. -1 is a, perspective view of a truck equipped with a body specially constructed and arranged for the present purposes;

Fig. 2 is a vertical longitudinal section through the truckbody;

Fig. 3 is a horizontal section through the truck body; y I

Fig. 4 is a plan of a cartridge holder an cartridges mounted thereon; and

Fig. 5 is a perspective view of tlieholder and one of the cartridges.

' Refering to the drawings, 1 designates a truck having a. body 3 provided with a conipartment 5 and a compartment 7 adapted to receive refrigeratingcartridges. These compartments have wallsrformed of inner metal sheets 9 (Figs. 2 and 3) and outer metal sheets 11, cork 13 or other suitable insulation being interposed between them. The compartments have openings 15.at the tops thereof provided with suitable covers 17 hinged to the compartments. To facilitate ready access to the compartments for the purpose of introducing cartridges into and taking them from the same, the compartments may be spaced to provide a passageway 19 between them. a

Extending transversely across the'body of the truck at the front ends of the compartments is a refrigerating compartment or chamber21 for receiving ice cream containingcans 23 orfor receiving other materials to be refrigerated. The chamber 21 has hollow inner walls 25 formed of sheet metal, and in the present instance on five sides of said chamber, saidwalls being adapted to receive a liquid which may be a solution of barium, potassium and water in proportions to have a low freezing temperaturefsuch, for example, as 4 Fahrenheit. The liquid inay be introduced into the hollow walls through the neck 27 (Fig. 2') normally closed by a plug 29. .One side of the chamber is provided with a suitable door 3 l which may be 41. all of cork or other suitable insulation.

and having an outer cover formed of sheet metal.,- The bottonr43 of the truck body is also provided with cork or other suitable insulation. l I H Communication may be established between the cartridge receiving compartment 5 and one of the hollow walls 33 by apassage 4.5 adjacent the bottoms thereof, and communication may be established between the hollow wall 33 and the compartment 7 by a. passage47 adjacent the tops thereof. The compartment 5 has an inlet passage in thefo'rm of a short pipe 4:9. I The compartment 7 has an overflow or outlet passage in the form of a short pipe 51 adjacent the top thereof, and a drain passage; in the form of a short pipe 52 (Fig-1) adjacent the bottom of said compartment. These pipes ex- SETTS, ASSIGNORS TO BEMIS INDUSTRIES, INC., 0]? BOSTON, MASSACHUSETTS, A l

tend a short distance out-beyond the rear ends of the compartments and are adapted for connection with the feed, return and drain piping disclosed in our aforesaid co-. pending application.

The cartridges are similar in construction, and therefore, a description of one will suffice for all. In the present instance a cartridge 53 (Figs. 4 and 5) is provided formed of sheet metal, of triangular cross section and having'a handle 55 at the top thereof. The cartridge is partially filled with a liquid which may be a solution of barium, potassium and water in proportions to have a low freezing tempera,- ture, such, for example, as 4 Fahrenheit. This liquid may be introduced into the cartridge through an opening in the top thereof normally closed by a plug 57.

. Four of these cartridges are adapted to be placed in the customers cabinet to accommodate one ice cream containing can,

and accordingly, it is desirable that four of the cartridges may be handled as a unit. To'accomplish this, a holder 59 (Figs. 4 and 5) is provided comprising a sheet metal base 61 having upturned flanges 62, and secured to. and rising from the base is a post 63 of sheet metal and having cruciform cross section. At the upper end of the post is a handle 65 on a bail 67 having hook ends entered into elongated slots in the 0st. Intermediate the upper and lower en s of the post is a square frame 71 conveniently formed of a-metal strip bent to present a diagonal bar 73 entered through "opposed slots in the post. The construction is such that four cartridges may be carried by the holder and be held in spaced relation by ribs on the post 63. These units are adapted to be placed one on top of another in the cartridge compartments of the truck body, and to facilitate the proper seating of an upper unit on a lower one, the handle 65 is allowed to drop down as permitted by the slots 69 until it engages the top of the post which is somewhat beneath the tops l of the cartridge. The lower rows of these units may rest upon racks 75 (Fig. 2) on the bottoms of the compartments.

The construction is such that when the truck body is connected by piping with the in circulation through tlf cartridge compartments and the outer wall of the refrigerating chamber for a sufficient time to freeze the liquid in the cartridges and the liquid in the inner wall of the refrigerating compartment. Since the cartridges are separated by their holders with substantial spaces between them, there is ample room for the cooling liquid to come in contact with all sides of the cartridges. After the liquid in the cartrid es and in the inner wall of the refri eratln chamber is frozen, the cooling liquid may e drained from the cartridge compartments and the outer wall of the refrigerating chamber.

It will be understood that the invention is not limited to the specific embodiment shown, and that various deviations may be made therefrom without departing from the spirit and scope of the appended claims.

What is claimed is:

1. A truck body provided with a refrigerating compartment havin an inner hollow wall for receiving a liquid which freezes at a low temperature and having an outer hollow wall, a compartment adapted to receive refrigeratingcartridges, and a passage connecting the cartridge compartment with the outer hollow wall, said cartridge compartm'ent having provision for receiving a cooling liquid for freezing the liquid in the cartrides, and said passage being adaptedhollow wa ls for the refrigerating comparb ment, said inner wall containing a liquid which freezes at a low temperature, passages connecting the cartridge compartments with the outer hollow wall, an inlet passage for one of said cartridge compartments and an outlet passage for the other cartridge compartment.

3. A truck body provided with a pair of cartridge receiving compartments and,a refrigerating compartment, inner and outer hollow walls for the refrigerating compartment, said inner wall containing a liquid which freezes at a low temperature, a passage connecting one of the cartridge compartments with the outer hollow wall ad jacent the bottoms thereof, and a passage connecting the other cartridge compartment with the outer hollow wall adjacent the tops thereof.

HENRY C. FOLGER. JAS. E. QCONNELL. 

